Lubricating-pulley.



UNTTnDi STnTns PATENT FFME@ VILLIALWI REID, OF LONDON, ENGLAND.

igueaicarlrecienI Lev SPECIFICATION forming part 0f Letters Patent No.. 696,594, dated April 1, 1902.

Application filed November 4, 1901. Serial No. 81,081. (No model.)

T0 all whom t nfl/cy concern:

Be it known that LWILLIAM REID, a subject of the King of Great Brit-ain and Ireland, and a resident of London, England, have invented a certain new and useful Improvement in Lubricating-Pulleys; and I do hereby declare the following to be a full, clear, and exact descriptiolrof the same.

This invention relates tothe lubrication of pulleys, sheaves, wheels, and the like which rotate about shafts, its object being to provide for the long-continued automatic lubrication of such parts in the improved manner hereinafter described.

To this end the invention is characterized by the combination of a pulley having a lubricant-reservoir formed around within its hub with a bush fitted to the pulley-hub and to the shaft and having grooves in its Working periphery packed with leather, asbestos,or other suitable lubricant-absorbent, by which the lubricant is applied to the shaft, and channels serving to conduct the lubricant from said reservoir to said packing, the reservoir being formed with one or a plurality of contracted parts serving to counteract or modify the centrifugal effect ou the lubricant of the rotation of thepulley and to cause the lubricant to be brought into close contact with the channels conducting it to said packing, and the packing-holding grooves being arranged helically in relation to the shaft-axis, so as to cause sonne part or parts of said packing to rest on the shaft in whatever position the pulley may stop and as to cause said packing to serve not only to apply the lubricant to the shaft, but also 'toV give an endwise motion to the lubricant in the direction of the axis of the shaft, tending to keep the latter free from any accumulation thereon.

On the accompanying drawings, Figure l represents a side elevation, partly in section, of a pulley-block sheave adapted according to the present invention. Fig. 2 is a sectional elevation on the line 2 2, Fig. l..

The pulley o, is' formed around and within its hub h With a lubricant-reservoir c, having a closable inlet (l, which may be situated at any convenient partot' the pulley. The pulley-hubis fitted with a bush e, adapted also to fit the shaft on which the pulleyis mounted and which is formed on its inner periphery with helically-disposedgrooves f, which are packed with leather, asbestos, or other suitable lubricant-absorbentg, and is formed with outer radiating channels h, which may beconnected by a channel surrounding the bush, serving to supply the lubricant from the reservoir c to the packing g, which supplies it direct to the shaft and at all times and in all positions of stoppage of the pulley rests with some part thereof on the shaft.

The lubricant-reservoir c is formed of aseries of concavities extending into the lbody of the pulley or Wheel around the bore, and the solid porti-ons t', which separate these con cavities, are provided with short channels j, which together lform an annular channel connecting the said concavities. 3y thus subdividing the reservoir c the centrifugal effect on the lubricant due to the rotation of the pulley is lnodied and it is caused to pass to the radial channels 7L in the bush e and thence to the groovefand packing g, the said radial channels leading from the short connectingchannels j. The solid portions 'L' also strengthen the hub and afford bearingsurfaces for the bush. I

l/Vhat I claim as my invention, and desire to secure by Letters Patent, is-d 1. A lubricating pulley or Wheel, provided Within and around its bore with a series of concavities and a series of short channels in its intermediate solid portions connecting said concavities, and a bushing fitting the solid portion of the bore and forming one Wall of the reservoir formed by the said concavities and short channels, the said bush having in its inner Wall a helical groove and a channel connecting saidgroove with one of the said short channels; substantially as described.

2. A lubricating pulley or Wheel provided Within and around its bore With an annularlyarranged series of concavities, aseries of short channels j in its intermediate solid portions t', and a iilling-opening, and a bushing e fitting the bore and forming one wall of the reservoir In testimony whereof I have signed this ing Witnesses.

ing having a series of helical gioovesf in its inner Wall and channels h leading from the said grooves to the channels j, and an absorbent material in thegrooves f; substantially as described.

i c formed by said concavities; the said bush- Specification in the presence of two subscrib- WM. REID.

Witnesses:

Jos. B. MIDDLETON, GEO. M. SHEPPARD. 

